package com.demo.codec2;

import com.demo.codec.StudentPOJO;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;

import java.util.Random;

/**
 * @author gy
 * @date 2022/5/30
 */
public class NettyClientHandler extends ChannelInboundHandlerAdapter {

    // 当通道就绪就会触发该方法
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
//        // 发送一个Student 对象到服务器
//        StudentPOJO.Student student = StudentPOJO.Student.newBuilder().setId(4).setName("豹子头 林冲").build();
//
//        ctx.writeAndFlush(student);

        // 随机的发送student 或者 worker 对象
        int random = new Random().nextInt(3);
        MyDataInfo.MyMessage myMessage = null;

        if (random == 0){
            myMessage = MyDataInfo.MyMessage.newBuilder().setDataType(MyDataInfo.MyMessage.DataType.StudentType)
                    .setStudent(MyDataInfo.Student.newBuilder().setId(5).setName("玉麒麟 卢俊义").build()).build();
        }else {
            myMessage = MyDataInfo.MyMessage.newBuilder().setDataType(MyDataInfo.MyMessage.DataType.WorkerType)
                    .setWorker(MyDataInfo.Worker.newBuilder().setAge(20).setName("老李").build()).build();
        }
        ctx.writeAndFlush(myMessage);

    }

    /**
     * 当通道有读取事件时，会触发
     * @param ctx
     * @param msg
     * @throws Exception
     */
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {

        ByteBuf buf = (ByteBuf)msg;
        System.out.println("服务器回复的消息" + buf.toString(CharsetUtil.UTF_8));
        System.out.println("服务器的地址：" + ctx.channel().remoteAddress());

    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}
